Ernest ttnger



Oct. 6,1925

E. UNGER HAIR WAVING HEATER Filed "May 24 1923 A TTORN E Y Patented Oct. 6, 1925.

ERNEST TING-ER, OF NEW YORK, N. Y.

HAIR-WAVING HEATER.

Application filed May 24, 1923. Serial No. 641,036.

To aZZ 7.071 am it may concern Be it known that I, ERNEST llNcl-tn, a citizen of the United States, and resident of New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in HairlVaving Heaters, of which the following is a specification.

The invention relates in general to an electric heater of the type commonly employed in practicing the art of permanent hair waving, and the invention specifically relates to that portion of the heater which includes the electric leads and the attachment of the same to the heating coil usually found in such heaters.

Some forms of these heaters are constructed of two tubular members, in the form of metal shells telescoping one within the other and with the heating coil disposed in the space between the shells. An electric cable containing leads for supplying the heating coil extends into the space between the shells at one end of the heater and is secured in some approved way to the ends of the heating coil. These heaters, arranged in groups, are usually suspended from an overhead bracket'and it is a usual. pactice to suspend the heaters using the electric cables as suspending means. This obviously puts a strain on the connection between each of the electric leads and its associated end of the heating coil, frequently resulting in the accidental breaking of the connection. These heaters are usually provided with a handle projecting longitudinally from the end through which extends the lead and the presence of both the loose leads and of the handle tends to multiply projections from the heater with resulting danger of entanglement with other similar heaters and their projections.

Accordingly one of the objects of the invention is to minimize the separate projections from the ends of the heater. This object is attained by utilizing the conventional handle as a means for guiding and containing the leads as they approach the heater. I

Another object of the intention is to provide a simplified means for connecting the electric lead to the heater in such way as will relieve strain on the connection between the leads and the heating coil.

This is attained by utilizing the usual wrapping 0n the handle for the additional purpose of securing the leads directly to the heater and thus prevent breaking strains on the connections between the leads and the heating coil.

In heaters of the type under discussion the heating coil is usually a fabricated construction containing the heating wires and the insulation, usually sheets of mica, has to be fastened or secured in place usually by means of a tying wrapping. Another object of the invention is to provide an improved form of fastening means for securing the leads electrically to the heating coil and incidentally to utilize such connectors additionally to clamp the partsof the fabricated coil in position on the support provided by the heater casing.

Still another object is to provide a simplified form of electric connector between the leads and the coil which will be a simple onepiece stamping free of machined or other expensively constructed parts and which can be readily mounted in operative position;

easily adjusted to fit various sizes and shapes of supports, which can be designed to engage different diameters of electric wires and which can be easily mounted in place without necessity of any refined adjustment either in the construction or in the disposition of the several parts.

Another object of the invention is to provide a simplified means for connecting the suspenser electric lead to the heater in such way as will relieve strain on the connection between the leads and the heating coil.

Various other objects and advantages of the invention will be in part obvious from an inspection of the accompanying drawings and in part will be more fully set forth in the following particular description of one form of mechanism embodying my invention, and the invention also consists in certain new and novel features of construction and combination of parts hereinafter set forth and claimed.

In the accompanying drawings: a

Figure 1 is a view largely in axial section showing a preferred embodiment of the j vention} with parts broken away to show tails of construction: and taken on the 11 of Fig. 2 looking in the directior dicated by the arrow;

Eigure 2 is a view partially in side e vation of the device shown in Figure looking at the same from the right side the showing in Figure 1, and with cert parts broken away and other parts omitted to disclose details of construction;

Figure 3 is an enlarged transverse sectional view taken on the line 3-3 of Fig- .ure 2 looking in the direction indicated by the. arrow; and

Figure 4 is a perspective view showing mounting ring 13. Positioned in the space so formed between the tubes and -11 is a heating coil 14 including& spirally disposed wire 15 together with sheets of mica 16 both encircled by a wrapping of asbestos cord 17, all as is usual nd well known 1n heaters of the character under discussion.

From the mounting ring 13 extends a 'U' shaped handle 18 which contains a U-shaped bail 19 with the ends thereof. extending through the mounting ring and secured in.

place by nuts 20. Further following the usual practice the bail is wrapped with asbestos cord 21 .or similar heat insulat ng material.

The-heating coil is supplied from a cable 22 containing a pair of leads 23 and 24.-

Instead of these leads extending directly through the mounting ring. 13, they are first brought to the crotch portion 25 of'the handle, are disposed to extend alongthe handle and enter the heater through apertures 26 formed in the ring. One of these apertures is shown in Figure 2 in position close to the point where the associated leg of the handle bail extends through the ring. The same'wrapping 21 which is used insula te the handle is in this instance used to secure the leads to the handle. In this way the leads are connected to the heater outside of its outline thus leavingthe inner ends 26 free for adiustment relative'to both the heater and to the ends of the coil with its coil holding position. Describing either which they are to be connected. Any strains therefore .on the heater 'are transferred through the handle to the suspending cable" and no such strains are transmitted through the inner ends of the leads.

The leads are connected to the ends of the heating coil by means of metal clips 27 and 28 one'of 'which is shown in Figure4 in its original flat position beforegbeing bent to clip it is noted that it is a narrowrstrip of thin sheet copper provided adjacent one end with a slot 29 and with the opposite end reduced to form a tongue 30. The tongue end is designed to bethreaded through the slot 29 but back upon itself as shown at 31 in Figure 3 so as to form a hook or clamp for securing the coil in place. The end32 of the tongue may be'again bent in reveme direction back upon itself so as to form a clamp for retaining the metal conductor 33constituting part of the lead 23.

its outline and intermediate its ends, and the cut-away portion is bent out of the plane of the clip to form a tongue '34 spaced relation to the slot 29. This tongue 34 is designed to be bent back upon itself to form a clamping tube for connecting thereto either one end of the coil or, as shown in Figure 2, to connect with one of the leads The body of the clip is cut-away within From this construction it will be readilrw understood that one of the incoming lea s is connected directly .to one of the clips and theother lead is connected to the other cli Similarly, one end of the heating coil is connected to oneof the clips andv the other end of the coil is connected to the other clip. Where conductors, such as the conductor 24, bridge the clips nearest themounting ring, a strip of insulating material 35 is sitioned between the conductor and the c ip so as toinsure against short circuiting at this point. In assembling the parts the handle is formed by trailing the electric leads down each leg from the crotch portion of the handle. The loose ends of the leads are then threaded. through the apertures 26 and the legs are then wrapped so as to secure the leads to the legs. In constructing the electric parts of the devlce it will be understood that the heati coil will be assembled onthe tube 10 whic acts as a support following conventional practice and that the parts are fastened in position by causing the clips to encircle the coil and associated parts. The end of the tongue 30 is inserted through theslot 29 and after tightening up on 'the connection the totgue is bent back through'the slot as sh wn more clearly in Figure 3. The extreme end of the tongue is then again bent.

'electrica connections in this way a me-. talhc connectlon is provided between each lead and one end of the coil. Similarly the other end of the coil is connected to the other lead through the other clip. ,.The outer shell 11is then inserted in sition, the

fastening screws positioned an the device.

is ready for operation.

By means of a device of this character iao any tendency of the leads or of the ends of the coil to become separated is minimized and there is thus avoided any necessity for providing a secure form of connection at. the ends of the electric conductors. The clip herein disclosed can be readily positioned without necessity of using skilled labor for this purpose and one size of clip can be used for inner tubes of different diameters. It is simply necessaryto wrap the clips about the coil and bend the several tongues into the suggested positions.

- Having thus described my invention, I claim:

' 1. In a device of the class described, the combination of an inner shell, an outer shell telescoping the same, a mounting ring at one end of the device contained between the shells for separating the same, a heating coil disposed between the shells, a handle including two ends rigidly bolted to the mounting ring at circumferentially spaced apart points, electric leads for supplying the coil, one of said leads carried by the handle as a part thereof, extending along one of the handle ends and through the ring adjacent said end and connected electrically to one end of the coil.

2. In a device of the class described, the combination of a mounting ring, a handle including a U-shaped member having the ends of its. legs extending through and secured to the ring, an electric cable including a pair of conductors disposed with one end extending along one of the legs of the U member and the other extending along the other leg and both conductors extending through the ring in juxtaposition to the point of attachment of its associated leg, and'means for securing the conductors to their respective legs.

3. An electric heater provided at one end with a mounting ring provided with a pair of apertures, a handle secured to said ring and projecting outwardly therefrom, a heating coil within the outlines of the heater, electric leads connected electrically to the coil and adapted to constitute a suspending means for supporting the heater, said leads extending from the coil, through said pair of apertures and along the handle, and means acting to secure the leads to the handle thereby to cause strains on the heater to be transferred through the ring and handle and thus minimize any tendency of the leads breaking away from the coil. I

4. In a device of the class described, the combination with a container, of a heating coil in the container, means for securing the coil-in place, an electric lead for supplying the coil, said lead extending from the outside into the container, means enga 'ng the lead adjacent its point of entrance into the container for securing the lead to the container thereby to prevent accidental separation, the portion of the lead within the container being free for movement relative to both the coil and the container and readily connectihle means for securing the inner free end of the lead electrically to one end of the coil.

5. In a heater, a support, a heating coil wrapped about the support, a metallic clip encircling the support and provided with two wire connectors, one of said connectors engaging one end of the coil for the dual purpose of securing the end to the support and for providing an electric connection between the metal clip and the coil, and a lead connected electrically to the clip through the other connector.

(5. An electric heater including a support, a heating coil wrapped about the support, a layer of insulating material enclosing the coil, a metallic band encircling the layer to secure the coil in place, said band provided with means for connecting the same electrically with one end of the coil.

7. An electric heater including a support, a heating coil wrapped about the support, a layer of insulating material enclosing the coil, a metallic band encircling the layer to secure the coil in place, said band provided with means for connecting the same electrically with one end of the coil, and said band provided with easily securable means for connecting thereto an electric lead.

8. An electric heater including a support, a heating coil wrapped about the support, a pair of readily removable metal bands encircling the support, one end of the coil connected electrically to one of the bands and the other end of the coil similarly connected to the other band, means for insulating the bands from each other and *from the support and means for connecting electric leads to the bands.

9. An electric heater including a support, a heating coil carried by the support, a metallic clip encircling the support in binding engagement therewith, said clip including a tongue adapted to be bent back upon itself to provide a means for connecting the clip electrically with the coil.

10. An electric heater including an inner tube, an outer tube, a heating coil contained between the tubes and electrically insulated therefrom, a pair of metallic clips for securing the coil in place, one of the clips connected electrically to one end of the coil and the other clip similarly connected tothe other end of the coil, a pair of electric leads extending into the heater between the tubes with one lead connected electrically to one of the clips and the other lead similarly connected to the other clip.

' 11. In a device of the class described, the combination of a support, a heating coil, and a one-piece metal clip adapted to be bent into position to secure the coil to the support and said clip having a portion adapted to be bent back upon itself to provide a means .for securing thereto an electric conducting wire.

12. In an electric heater, the combination with a heatin coil and one of a pair of electric leads orsupplying the same, of a metallic clip having a tongue at one end and a slot at the other end adapted to receiveflm tongue, the portion of the tongueadapted to be passed through the slot being bendable back upon itself to lock the tongue in the slot and to constitute a means for securing thereto either one end of the coil or the electric lead.

13, In an electric heater, the combination with heating coil and one'of a pair of electric leads for supplying the same, of a metallic clip having a tongue at one end and aslot at the other end adapted-to receive the tongue, the portion of the tongue adapted to be bac assed throu h the slot being bendable upon itself to lock the tongue in the slot and to constitute a means for securing thereto either one end of the coil or the electric lead, and said clip being cut awa to provide a second tongue also bendable ack upon itself to constitute a means for securing thereto either one end of the coil or the electric lead. v

14'. In an electric heater, the combination of a coil, two electric conductors for supplying the coil, a clip for electrically connecting the two electric conductors, said clip comprising a one-piece bendable metal strip having a slot a jacent one end adapted to receive the other-end when bent to extend therethrough, said clip having a dportion cut away to provide a finger adapte to be bent back upon itself to secure thereto one of the conductors and an endportion of the clip adapted to be bent back upon itself, to secure thereto the other conductor.

Si ed at New York'city, in the county of ew York and State of New York, this 17th dav of May A. D. 1928;

ERNEST UNGER. 

